Feature:1. Using high precision double ball bearings, it has long service life and low noise.2. Pure copper coil, high temperature resistant, greatly improve running stability, low power consumption and energy saving.3. Support speed measurement and PWM wind speed adjustment.4. The rotating speed can reached 5300rpm, which has good heat dissipation.5. Advanced manufacturing technology, high reliability and high performance.Specification:Condition: 100% Brand NewItem Type: Cooling FanMaterial: ABSColor: As picture shownBearing: Double BallSize: Approx. 80 x 80 x 15mm/3.1 x 3.1 x 0.6inMean Time Between Failures (MTTF): 180,000 HoursCurrent: 0.50ASpeed: 5300rpmNoise: 39dBAAir Volume: 41.3CFMLine Length: Approx. 18cm/7.1in (4 Lines) Support Speed Measurement, Support PWM.Package List:1 x Cooling Fan